### Application of Operating Work Indices in Autogenous

Ball Mill Wio BWio 8.6 Circuit Wio OWio 14.6 Bond Ball Mill Work Index BWi kWh/t 13.4 Bond Rod Mill Work Index RWi kWh/t 18.1 Table 1 Example of AG/SAG Ball Mill Circuit Wio Calculations 1 2 ABstrAct Optimum use of power in grinding both in terms of grinding efficiency and use of installed capital can have a large effect on

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Chat Online### Kinetic grinding test approach to estimate the ball mill

Kinetic grinding test approach to estimate the ball mill work index 345 Kinetic grinding Exactly 700 cm3 of 100 passing 3.35 mm material from each sample was progressively grounded in periods of 0.33 1 2 4 and 8 minutes.

Chat Online### Technical InformationSMC Testing

Technical Information Information about sample size calibration precision and accuracy The SMC Test is the most widely used comminution test in the world for AG SAG Mills HPGRs and Crushers The SMC Test was developed to provide a range of useful comminution parameters through highly controlled breakage of rock samples.

Chat Online### Petcoke for jsw pradeepSlideShare

Petcoke rules The following rules are important for the utilization of petcoke in calciner kilns Alkali sulfur SO3 inputs <2.0 clinker basis Molar ratio of Alkali sulfur ≥ 0.4 Coal petcoke preparation Controlled mixing from two feed hoppers Coal mill o Petcoke fineness R 90µm <3 and R 200µm <1 o Determine the coal

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Chat Online### Ball Mill Granding For Petcoke Ball Mill3dleerlijn

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Chat Online### Petcoke Ball Mill Work Indexgreenrevolution

petcoke ball mill work indexGrinding Mill China Coupled with the standard Bond Ball Mill Work Index Test it is now possible to determine from these petcoke grinding masinary seller forball mill in gujarat petcoke grinding masonry sealer for ball mill in guj vertical roller mill coal petcoke specification dust collector bag for petcoke grinding

Chat Online### Petcoke Grinding Mill Manufacturers In Turkey

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Chat Online### Comparison of UCS to Bond Work Indices

Work Index values crushing rod mill and ball mill Data from 11 mines located around the world is analysed for correlations between UCS and various Wi values Introduction Need to accurately predict future mine and mill production rates requires a knowledge of ore grindability well in advance of when ore are actually mined.

Chat Online### A Method of C alculating Autogenous Semi

ball mill work index was averaging only 11.6 kWh/t which is not hard A rod mill work index ﬁ gure was not found but was thought to be in the 16 kWh/t to 18 kWh/t range The Xstrata Zinc 22 ft ID 40 ft EGL over ow ball mill ﬂ was installed at Mt Isa in 2009 This mill was put into single

Chat Online### Petcoke Grinding Mill Manufacturers In Turkey

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Chat Online### Standard Bond Ball Mill Grindability Test Method Procedure

Place Material Charge and Ball Charge in Mill Run x revolutions x = number of revolutions based on estimate of work index usually 50 100 150 or 200 revolutions Dump Mill separate balls and Material Charge Screen all the material at Mesh of GrindWeigh Product.

Chat Online### Petcoke for jsw pradeepSlideShare

Petcoke rules The following rules are important for the utilization of petcoke in calciner kilns Alkali sulfur SO3 inputs <2.0 clinker basis Molar ratio of Alkali sulfur ≥ 0.4 Coal petcoke preparation Controlled mixing from two feed hoppers Coal mill o Petcoke fineness R 90µm <3 and R 200µm <1 o Determine the coal

Chat Online### Correction of Bond Ball Mill Work Index Test for Closing

This is because work index frequently changes as a function of the product size in comminution If target grind size during a project is changed or if the test is run at the wrong product size then it is necessarily to provide a correction The goal of this work is to create an equation to adjust a Bond ball mill work index from one P 80 basis

Chat Online### Bond Ball Mill Work Index GTEK

Bond Ball Mill Work Index is used for determine the grindability of materials and help to choose the suitable grinding equip Position Home Page >>> Products >>> Laboratory Equipments >>> Lab Grinder Bond Ball Mill.

Chat Online### Petcoke Ball Mill Work

petcoke grinding for clinker production ball mills for grinding of petcoke Mining Ball Mill is the time tested conventional machine suitable for grinding Get Price ball mill grinding of petcoke Grinding Mill China blend with coal is an attractive feedstock for combustion process The present work investigates the grinding characteristics .

Chat Online### Energy Use of Fine Grinding in Mineral Processing

For P80s finer than 75 μm the Levin test a modified Bond ball mill work index test may be used to predict grinding performance Signature Plots No general work index formula governing energy use over a range of conditions like the Bond equation for intermediate grinding has yet been found for the fine grinding regime.

Chat Online### Bond Efficiency GMG ICE v1 r04 Determining

µm Note that in order for no correction factor for ball mill product fineness to apply the ball mill circuit P80 should be no less than approximately 70 µm Bond 1962 This Bond Efficiency determination should not be applied to cir cuits with a P80 finer

Chat Online### P80 of Bond ball mill Work Index tests

The laboratory procedure for running a Bond ball mill work index test requires that the operator choose a closing screen sieve size The instruction is to choose a sieve size that results in the

Chat Online### Challenge For Petcoke Grinding And Milling

challenge for petcoke grinding and milling Milling Calcined Grinding The coal petcoke grinding system consists of two identical vertical roller mills with 740 kw gear reducers each mill is designed to produce 37 th of petcoke with a hardgrove index hgi challenge for petcoke grinding and milling about gbm gbm specializes More

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Chat Online### Bond Work Index Procedure and Method

This Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples These equation application methods are used to process <1/2″ ore samples in a Ball Mill using a standard ball charge.

Chat Online### Cement Grinding OptimizationSlideShare

Wm = Wi 80P 1080F 10 1 where Wmis mill specific motor output power kWh/t Wiis the Bond ball mill work index kWh/t P80is sieve size passing 80 of the mill product µm F80is sieve size passing 80 of the mill feed µm The efficiency factors Rowland 1975 modify equation 1 so that it caters for circuit

Chat Online### Bond Work Index Report Matrix House

The Work Index is used when determining the size of the mill and grinding power required to produce the required ore throughput in a ball mill 2 Procedure 2.1 Bond Ball Mill Grindability The sample was crushed to 100 passing 6 mesh 3.35mm from this a 700 cc volume was measured and weighed to be used as feed for the Bond Mill.

Chat Online### SAGMILLING Articles

Correction of Bond Ball Mill Work Index Test for Closing Mesh Sizes It is commonly known that one must run the Bond ball mill work index test such you pick a closing mesh

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Grinding Coke In Ball Mill Ball mill Wikipedia ball mills for grinding of petcoke The ball mill is a key piece of equipment for grinding crushed materials and it is widely used in production lines for powders such as cement silicates refractory material fertilizer glass ceramics etc as well as for ore dressing of both ferrous and nonferrous metals The ball mill can grind various ores and

Chat Online### Petroleum Coke Sampling Services McCreath Laboratories

Petroleum Coke or petcoke as it is sometimes commonly referred to is a byproduct created in the refining process of heavy crude oil During the distillation of the crude into the many various fractions and products gasoline diesel fuel oil jet fuel kerosene naphtha lubricants waxes etc components of the crude known as bitumens

Chat Online### Bond Work Indexan overview ScienceDirect Topics

The ball mill work index laboratory test is conducted by grinding an ore sample prepared to 100 passing 3.36 mm 6 mesh to product size in the range of 45 150 µm mesh thus determining the ball mill work index Wi B or BWi The work index calculations across a narrow size range are conducted using the appropriate laboratory work

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Chat Online### A New Approach to the Calculation of Work Index and

The work index W i using a novel ring mill a laboratory ball mill a labora tory rod mill and the semi continuous process using the same rod mill as described below In all cases the min eral sample is crushed and screened to pass a predeter mined size 3.5 or 4 mm The feed sample undergoes a

Chat Online### Ball mill work index adjustmentSAGMILLING

Ball mill work index adjustment The Bond ball mill work index test requires the operator to select an appropriate screen size to close the test The procedure states that the closing screen size should be such that the product size of the test is the same as the expected product size of

Chat Online### PDF Grinding Characteristics of Coal and Petroleum Coke

of this work is to evaluate the grinding characteristics of coal and coal/petcoke blends to mimic the industrial tube mill performance using a laboratory batch ball mill Materials and methods

Chat Online### PDF Grinding Characteristics of Coal and Petroleum Coke

of this work is to evaluate the grinding characteristics of coal and coal/petcoke blends to mimic the industrial tube mill performance using a laboratory batch ball mill Materials and methods

Chat Online### Crushers For Marble Petcoke

Petroleum Coke Petcoke Crusher Petcoke in coal mill know more petroleum coke pc blend with coal is an attractive feedstock for combustion process the present work investigates the grinding characteristics of pc blend with coal in a laboratory ball mill to petcoke as a lime kiln fuel petcoke crusher crusher mills cone crusher jaw.

Chat Online### Bond Ball Mill Work Index GTEK

Bond Ball Mill Work Index is used for determine the grindability of materials and help to choose the suitable grinding equip Position Home Page >>> Products >>> Laboratory Equipments >>> Lab Grinder Bond Ball Mill Work Index.

Chat Online### Calculate a Mill s Operating Work Index911 Metallurgist

Calculate a Mill s Operating Work Index Use this online formula to calculate a Ball Mill Rod Mill or SAG Mill Operating Work Index Based on Fred Bond s work you can estimate the energy used into your grinding circuit This is the most accurate and informative method but much of the data necessary for its application is not yet available.

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